Corrugated sheet piling



J. R. WEMLINGE R CORRUGATED SHEET FILING Jan. 10, 1933.

Filed Feb. 5. 1951 Patented Jan. 10, 1933 PATENT OFFICE JULIUS R. WEMLINGEB, OF BROOKLYN, NEW YORK CORRUGATED SHEET FILING Application filed February 5, 1931. Serial No. 513,708.

This invention relates to corrugated sheet piling of the general type of that shown in my prior patents, Nos. 1,084,120 and 1,166,- 563. More particularly stated, the lnventlon consists in such a construction of corrugated metal plates or sheets that they can be interlocked, preferably bylateral entry, by means of their edges alone, without the necessity of any additional means.

In the form of corrugated plates, shown 1n my said patents, it was necessary to secure attaching or interlocking clips near one of the edges of each plate. In the present lnvention, the edges are so formed that they Wlll interlock without the use of such clips. This reduces the weight and cost of the plates.

I so form the edges of each plate that, when two such plates are interlocked, sufliclent clearance will be left between the interlocked edges to permit of a relative angular movement or deflection between said plates. This is an important feature for the reason that, in the operation of driving the piling, forces are always present, to a greater or less degree,

tending to deflect the pile being driven in one direction or the other. These forces set up a large amount of friction, which results in a distortion or twisting of the plates, creat ing a bad alinement of the same and frequently tending to cause them to separate or pull apart.

It is to be understood that, while the plates hereinafter described are intended mainly for use as sheet piling, they are adapted for other uses as, for example, foundation plates for roads.

In the accompanying drawing,

Fig. 1 is a plan view, partly broken away,

of one of the improved corrugated plates with interlocking edges, and Figs. 2 to 6 are similar views of the interlocked edges of two plates in various relative positions.

The body of each plate is formed with the corrugations 2, which, as shown, are semicircular with the arcs united by tangents 3; the latter may beomitted, however, if desired.

One edge 4 of each plate is curled around circularly, a space 5 being left between the end of the curve and the adjacent tangent or side 3 of the last body corrugation.

The other edge 6 of the plate is also curled over, but on the opposite side of the plate from the edged and on a smaller radius, so that the curled edge 6 of one plate will fit within the curled edge 4 of the adjacent plate. The curvature of the edge 6 may becircular, as shown in Figs. 2 to 6, or may be somewhat flattened, as shown in Fig. 1. space 7 is left between the end of the curve 6 and the side of the adjacent body corrugation 2.

The construction described not only permits lateral entry interlock of the plates, but also provides suificient clearance in the interlock to permit considerable deflection, or relative angular movement of the plates, without distortion of the same.

Fig.2 shows the normal position of the edges of a pair of plates lying in the same plane; even in this position, there is enough clearance in the interlock to permit of some deflection, as indicated by the dotted lines. Fig. 3 shows the interlocked edges of two plates standing at a slight angle to each other, the clearance being somewhat greater than in Fig. 2. Fig. 4 illustrates the approximate maximum angular deflection without actual separation. Fig. 5 shows the position of the edges as they are being interlocked or disengaged. Fig. 6 shows the position just prior to the engagement or disengagement of the edges; the dotted line position shows that, even in this position, the edges can be inter- 5 locked, although the plates stand approximately at right angles to each other.

Having thus described my invention, what I claim is:

1. A corrugated metal plate, adapted for use in sheet piling, having one of its edges curled around in one direction and its other edge curled around in the other direction but with a smaller radius than the first mentioned edge, whereby adjacent plates can be interlockedby lateral entry and are capable of relative deflection.

2. Sheet metal piling, com osed of corrugated plates having interloc ing edges, the edges of each plate being oppositely curled so as to leave a space between the end of the curled edge and the side of the adjacent corrugation, the radius of curvature of one edge belng less than that of the other, whereby 5 said edges can be interlocked by lateral entry but with sufiicient clearance to allogv the plates to be relatively displaced angularly.

In testimony whereofi I have hereunto put my hand and seal this 29th dayfof January,

JULIUS R. WEMILINGER. 

